drivers/net/ixgbe/base/ixgbe_x540.c

   1 /*******************************************************************************
   2
   3 Copyright (c) 2001-2015, Intel Corporation
   4 All rights reserved.
   5
   6 Redistribution and use in source and binary forms, with or without
   7 modification, are permitted provided that the following conditions are met:
   8
   9  1. Redistributions of source code must retain the above copyright notice,
  10     this list of conditions and the following disclaimer.
  11
  12  2. Redistributions in binary form must reproduce the above copyright
  13     notice, this list of conditions and the following disclaimer in the
  14     documentation and/or other materials provided with the distribution.
  15
  16  3. Neither the name of the Intel Corporation nor the names of its
  17     contributors may be used to endorse or promote products derived from
  18     this software without specific prior written permission.
  19
  20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30 POSSIBILITY OF SUCH DAMAGE.
  31
  32 ***************************************************************************/
  33
  34 #include "ixgbe_x540.h"
  35 #include "ixgbe_type.h"
  36 #include "ixgbe_api.h"
  37 #include "ixgbe_common.h"
  38 #include "ixgbe_phy.h"
  39
  40 #define IXGBE_X540_MAX_TX_QUEUES        128
  41 #define IXGBE_X540_MAX_RX_QUEUES        128
  42 #define IXGBE_X540_RAR_ENTRIES          128
  43 #define IXGBE_X540_MC_TBL_SIZE          128
  44 #define IXGBE_X540_VFT_TBL_SIZE         128
  45 #define IXGBE_X540_RX_PB_SIZE           384
  46
  47 STATIC s32 ixgbe_poll_flash_update_done_X540(struct ixgbe_hw *hw);
  48 STATIC s32 ixgbe_get_swfw_sync_semaphore(struct ixgbe_hw *hw);
  49 STATIC void ixgbe_release_swfw_sync_semaphore(struct ixgbe_hw *hw);
  50
  51 /**
  52  *  ixgbe_init_ops_X540 - Inits func ptrs and MAC type
  53  *  @hw: pointer to hardware structure
  54  *
  55  *  Initialize the function pointers and assign the MAC type for X540.
  56  *  Does not touch the hardware.
  57  **/
  58 s32 ixgbe_init_ops_X540(struct ixgbe_hw *hw)
  59 {
  60         struct ixgbe_mac_info *mac = &hw->mac;
  61         struct ixgbe_phy_info *phy = &hw->phy;
  62         struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
  63         s32 ret_val;
  64
  65         DEBUGFUNC("ixgbe_init_ops_X540");
  66
  67         ret_val = ixgbe_init_phy_ops_generic(hw);
  68         ret_val = ixgbe_init_ops_generic(hw);
  69
  70
  71         /* EEPROM */
  72         eeprom->ops.init_params = ixgbe_init_eeprom_params_X540;
  73         eeprom->ops.read = ixgbe_read_eerd_X540;
  74         eeprom->ops.read_buffer = ixgbe_read_eerd_buffer_X540;
  75         eeprom->ops.write = ixgbe_write_eewr_X540;
  76         eeprom->ops.write_buffer = ixgbe_write_eewr_buffer_X540;
  77         eeprom->ops.update_checksum = ixgbe_update_eeprom_checksum_X540;
  78         eeprom->ops.validate_checksum = ixgbe_validate_eeprom_checksum_X540;
  79         eeprom->ops.calc_checksum = ixgbe_calc_eeprom_checksum_X540;
  80
  81         /* PHY */
  82         phy->ops.init = ixgbe_init_phy_ops_generic;
  83         phy->ops.reset = NULL;
  84         phy->ops.set_phy_power = ixgbe_set_copper_phy_power;
  85
  86         /* MAC */
  87         mac->ops.reset_hw = ixgbe_reset_hw_X540;
  88         mac->ops.enable_relaxed_ordering = ixgbe_enable_relaxed_ordering_gen2;
  89         mac->ops.get_media_type = ixgbe_get_media_type_X540;
  90         mac->ops.get_supported_physical_layer =
  91                                     ixgbe_get_supported_physical_layer_X540;
  92         mac->ops.read_analog_reg8 = NULL;
  93         mac->ops.write_analog_reg8 = NULL;
  94         mac->ops.start_hw = ixgbe_start_hw_X540;
  95         mac->ops.get_san_mac_addr = ixgbe_get_san_mac_addr_generic;
  96         mac->ops.set_san_mac_addr = ixgbe_set_san_mac_addr_generic;
  97         mac->ops.get_device_caps = ixgbe_get_device_caps_generic;
  98         mac->ops.get_wwn_prefix = ixgbe_get_wwn_prefix_generic;
  99         mac->ops.get_fcoe_boot_status = ixgbe_get_fcoe_boot_status_generic;
 100         mac->ops.acquire_swfw_sync = ixgbe_acquire_swfw_sync_X540;
 101         mac->ops.release_swfw_sync = ixgbe_release_swfw_sync_X540;
 102         mac->ops.init_swfw_sync = ixgbe_init_swfw_sync_X540;
 103         mac->ops.disable_sec_rx_path = ixgbe_disable_sec_rx_path_generic;
 104         mac->ops.enable_sec_rx_path = ixgbe_enable_sec_rx_path_generic;
 105
 106         /* RAR, Multicast, VLAN */
 107         mac->ops.set_vmdq = ixgbe_set_vmdq_generic;
 108         mac->ops.set_vmdq_san_mac = ixgbe_set_vmdq_san_mac_generic;
 109         mac->ops.clear_vmdq = ixgbe_clear_vmdq_generic;
 110         mac->ops.insert_mac_addr = ixgbe_insert_mac_addr_generic;
 111         mac->rar_highwater = 1;
 112         mac->ops.set_vfta = ixgbe_set_vfta_generic;
 113         mac->ops.set_vlvf = ixgbe_set_vlvf_generic;
 114         mac->ops.clear_vfta = ixgbe_clear_vfta_generic;
 115         mac->ops.init_uta_tables = ixgbe_init_uta_tables_generic;
 116         mac->ops.set_mac_anti_spoofing = ixgbe_set_mac_anti_spoofing;
 117         mac->ops.set_vlan_anti_spoofing = ixgbe_set_vlan_anti_spoofing;
 118
 119         /* Link */
 120         mac->ops.get_link_capabilities =
 121                                 ixgbe_get_copper_link_capabilities_generic;
 122         mac->ops.setup_link = ixgbe_setup_mac_link_X540;
 123         mac->ops.setup_rxpba = ixgbe_set_rxpba_generic;
 124         mac->ops.check_link = ixgbe_check_mac_link_generic;
 125
 126
 127         mac->mcft_size          = IXGBE_X540_MC_TBL_SIZE;
 128         mac->vft_size           = IXGBE_X540_VFT_TBL_SIZE;
 129         mac->num_rar_entries    = IXGBE_X540_RAR_ENTRIES;
 130         mac->rx_pb_size         = IXGBE_X540_RX_PB_SIZE;
 131         mac->max_rx_queues      = IXGBE_X540_MAX_RX_QUEUES;
 132         mac->max_tx_queues      = IXGBE_X540_MAX_TX_QUEUES;
 133         mac->max_msix_vectors   = ixgbe_get_pcie_msix_count_generic(hw);
 134
 135         /*
 136          * FWSM register
 137          * ARC supported; valid only if manageability features are
 138          * enabled.
 139          */
 140         mac->arc_subsystem_valid = !!(IXGBE_READ_REG(hw, IXGBE_FWSM_BY_MAC(hw))
 141                                      & IXGBE_FWSM_MODE_MASK);
 142
 143         hw->mbx.ops.init_params = ixgbe_init_mbx_params_pf;
 144
 145         /* LEDs */
 146         mac->ops.blink_led_start = ixgbe_blink_led_start_X540;
 147         mac->ops.blink_led_stop = ixgbe_blink_led_stop_X540;
 148
 149         /* Manageability interface */
 150         mac->ops.set_fw_drv_ver = ixgbe_set_fw_drv_ver_generic;
 151
 152         mac->ops.get_rtrup2tc = ixgbe_dcb_get_rtrup2tc_generic;
 153
 154         return ret_val;
 155 }
 156
 157 /**
 158  *  ixgbe_get_link_capabilities_X540 - Determines link capabilities
 159  *  @hw: pointer to hardware structure
 160  *  @speed: pointer to link speed
 161  *  @autoneg: true when autoneg or autotry is enabled
 162  *
 163  *  Determines the link capabilities by reading the AUTOC register.
 164  **/
 165 s32 ixgbe_get_link_capabilities_X540(struct ixgbe_hw *hw,
 166                                      ixgbe_link_speed *speed,
 167                                      bool *autoneg)
 168 {
 169         ixgbe_get_copper_link_capabilities_generic(hw, speed, autoneg);
 170
 171         return IXGBE_SUCCESS;
 172 }
 173
 174 /**
 175  *  ixgbe_get_media_type_X540 - Get media type
 176  *  @hw: pointer to hardware structure
 177  *
 178  *  Returns the media type (fiber, copper, backplane)
 179  **/
 180 enum ixgbe_media_type ixgbe_get_media_type_X540(struct ixgbe_hw *hw)
 181 {
 182         UNREFERENCED_1PARAMETER(hw);
 183         return ixgbe_media_type_copper;
 184 }
 185
 186 /**
 187  *  ixgbe_setup_mac_link_X540 - Sets the auto advertised capabilities
 188  *  @hw: pointer to hardware structure
 189  *  @speed: new link speed
 190  *  @autoneg_wait_to_complete: true when waiting for completion is needed
 191  **/
 192 s32 ixgbe_setup_mac_link_X540(struct ixgbe_hw *hw,
 193                               ixgbe_link_speed speed,
 194                               bool autoneg_wait_to_complete)
 195 {
 196         DEBUGFUNC("ixgbe_setup_mac_link_X540");
 197         return hw->phy.ops.setup_link_speed(hw, speed, autoneg_wait_to_complete);
 198 }
 199
 200 /**
 201  *  ixgbe_reset_hw_X540 - Perform hardware reset
 202  *  @hw: pointer to hardware structure
 203  *
 204  *  Resets the hardware by resetting the transmit and receive units, masks
 205  *  and clears all interrupts, and perform a reset.
 206  **/
 207 s32 ixgbe_reset_hw_X540(struct ixgbe_hw *hw)
 208 {
 209         s32 status;
 210         u32 ctrl, i;
 211
 212         DEBUGFUNC("ixgbe_reset_hw_X540");
 213
 214         /* Call adapter stop to disable tx/rx and clear interrupts */
 215         status = hw->mac.ops.stop_adapter(hw);
 216         if (status != IXGBE_SUCCESS)
 217                 goto reset_hw_out;
 218
 219         /* flush pending Tx transactions */
 220         ixgbe_clear_tx_pending(hw);
 221
 222 mac_reset_top:
 223         ctrl = IXGBE_CTRL_RST;
 224         ctrl |= IXGBE_READ_REG(hw, IXGBE_CTRL);
 225         IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
 226         IXGBE_WRITE_FLUSH(hw);
 227
 228         /* Poll for reset bit to self-clear indicating reset is complete */
 229         for (i = 0; i < 10; i++) {
 230                 usec_delay(1);
 231                 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
 232                 if (!(ctrl & IXGBE_CTRL_RST_MASK))
 233                         break;
 234         }
 235
 236         if (ctrl & IXGBE_CTRL_RST_MASK) {
 237                 status = IXGBE_ERR_RESET_FAILED;
 238                 ERROR_REPORT1(IXGBE_ERROR_POLLING,
 239                              "Reset polling failed to complete.\n");
 240         }
 241         msec_delay(100);
 242
 243         /*
 244          * Double resets are required for recovery from certain error
 245          * conditions.  Between resets, it is necessary to stall to allow time
 246          * for any pending HW events to complete.
 247          */
 248         if (hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED) {
 249                 hw->mac.flags &= ~IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
 250                 goto mac_reset_top;
 251         }
 252
 253         /* Set the Rx packet buffer size. */
 254         IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(0), 384 << IXGBE_RXPBSIZE_SHIFT);
 255
 256         /* Store the permanent mac address */
 257         hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr);
 258
 259         /*
 260          * Store MAC address from RAR0, clear receive address registers, and
 261          * clear the multicast table.  Also reset num_rar_entries to 128,
 262          * since we modify this value when programming the SAN MAC address.
 263          */
 264         hw->mac.num_rar_entries = 128;
 265         hw->mac.ops.init_rx_addrs(hw);
 266
 267         /* Store the permanent SAN mac address */
 268         hw->mac.ops.get_san_mac_addr(hw, hw->mac.san_addr);
 269
 270         /* Add the SAN MAC address to the RAR only if it's a valid address */
 271         if (ixgbe_validate_mac_addr(hw->mac.san_addr) == 0) {
 272                 /* Save the SAN MAC RAR index */
 273                 hw->mac.san_mac_rar_index = hw->mac.num_rar_entries - 1;
 274                 hw->mac.ops.set_rar(hw, hw->mac.san_mac_rar_index,
 275                                     hw->mac.san_addr, 0, IXGBE_RAH_AV);
 276
 277                 /* clear VMDq pool/queue selection for this RAR */
 278                 hw->mac.ops.clear_vmdq(hw, hw->mac.san_mac_rar_index,
 279                                        IXGBE_CLEAR_VMDQ_ALL);
 280
 281                 /* Reserve the last RAR for the SAN MAC address */
 282                 hw->mac.num_rar_entries--;
 283         }
 284
 285         /* Store the alternative WWNN/WWPN prefix */
 286         hw->mac.ops.get_wwn_prefix(hw, &hw->mac.wwnn_prefix,
 287                                    &hw->mac.wwpn_prefix);
 288
 289 reset_hw_out:
 290         return status;
 291 }
 292
 293 /**
 294  *  ixgbe_start_hw_X540 - Prepare hardware for Tx/Rx
 295  *  @hw: pointer to hardware structure
 296  *
 297  *  Starts the hardware using the generic start_hw function
 298  *  and the generation start_hw function.
 299  *  Then performs revision-specific operations, if any.
 300  **/
 301 s32 ixgbe_start_hw_X540(struct ixgbe_hw *hw)
 302 {
 303         s32 ret_val = IXGBE_SUCCESS;
 304
 305         DEBUGFUNC("ixgbe_start_hw_X540");
 306
 307         ret_val = ixgbe_start_hw_generic(hw);
 308         if (ret_val != IXGBE_SUCCESS)
 309                 goto out;
 310
 311         ret_val = ixgbe_start_hw_gen2(hw);
 312
 313 out:
 314         return ret_val;
 315 }
 316
 317 /**
 318  *  ixgbe_get_supported_physical_layer_X540 - Returns physical layer type
 319  *  @hw: pointer to hardware structure
 320  *
 321  *  Determines physical layer capabilities of the current configuration.
 322  **/
 323 u32 ixgbe_get_supported_physical_layer_X540(struct ixgbe_hw *hw)
 324 {
 325         u32 physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;
 326         u16 ext_ability = 0;
 327
 328         DEBUGFUNC("ixgbe_get_supported_physical_layer_X540");
 329
 330         hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_EXT_ABILITY,
 331         IXGBE_MDIO_PMA_PMD_DEV_TYPE, &ext_ability);
 332         if (ext_ability & IXGBE_MDIO_PHY_10GBASET_ABILITY)
 333                 physical_layer |= IXGBE_PHYSICAL_LAYER_10GBASE_T;
 334         if (ext_ability & IXGBE_MDIO_PHY_1000BASET_ABILITY)
 335                 physical_layer |= IXGBE_PHYSICAL_LAYER_1000BASE_T;
 336         if (ext_ability & IXGBE_MDIO_PHY_100BASETX_ABILITY)
 337                 physical_layer |= IXGBE_PHYSICAL_LAYER_100BASE_TX;
 338
 339         return physical_layer;
 340 }
 341
 342 /**
 343  *  ixgbe_init_eeprom_params_X540 - Initialize EEPROM params
 344  *  @hw: pointer to hardware structure
 345  *
 346  *  Initializes the EEPROM parameters ixgbe_eeprom_info within the
 347  *  ixgbe_hw struct in order to set up EEPROM access.
 348  **/
 349 s32 ixgbe_init_eeprom_params_X540(struct ixgbe_hw *hw)
 350 {
 351         struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
 352         u32 eec;
 353         u16 eeprom_size;
 354
 355         DEBUGFUNC("ixgbe_init_eeprom_params_X540");
 356
 357         if (eeprom->type == ixgbe_eeprom_uninitialized) {
 358                 eeprom->semaphore_delay = 10;
 359                 eeprom->type = ixgbe_flash;
 360
 361                 eec = IXGBE_READ_REG(hw, IXGBE_EEC_BY_MAC(hw));
 362                 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
 363                                     IXGBE_EEC_SIZE_SHIFT);
 364                 eeprom->word_size = 1 << (eeprom_size +
 365                                           IXGBE_EEPROM_WORD_SIZE_SHIFT);
 366
 367                 DEBUGOUT2("Eeprom params: type = %d, size = %d\n",
 368                           eeprom->type, eeprom->word_size);
 369         }
 370
 371         return IXGBE_SUCCESS;
 372 }
 373
 374 /**
 375  *  ixgbe_read_eerd_X540- Read EEPROM word using EERD
 376  *  @hw: pointer to hardware structure
 377  *  @offset: offset of  word in the EEPROM to read
 378  *  @data: word read from the EEPROM
 379  *
 380  *  Reads a 16 bit word from the EEPROM using the EERD register.
 381  **/
 382 s32 ixgbe_read_eerd_X540(struct ixgbe_hw *hw, u16 offset, u16 *data)
 383 {
 384         s32 status = IXGBE_SUCCESS;
 385
 386         DEBUGFUNC("ixgbe_read_eerd_X540");
 387         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
 388             IXGBE_SUCCESS) {
 389                 status = ixgbe_read_eerd_generic(hw, offset, data);
 390                 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 391         } else {
 392                 status = IXGBE_ERR_SWFW_SYNC;
 393         }
 394
 395         return status;
 396 }
 397
 398 /**
 399  *  ixgbe_read_eerd_buffer_X540- Read EEPROM word(s) using EERD
 400  *  @hw: pointer to hardware structure
 401  *  @offset: offset of  word in the EEPROM to read
 402  *  @words: number of words
 403  *  @data: word(s) read from the EEPROM
 404  *
 405  *  Reads a 16 bit word(s) from the EEPROM using the EERD register.
 406  **/
 407 s32 ixgbe_read_eerd_buffer_X540(struct ixgbe_hw *hw,
 408                                 u16 offset, u16 words, u16 *data)
 409 {
 410         s32 status = IXGBE_SUCCESS;
 411
 412         DEBUGFUNC("ixgbe_read_eerd_buffer_X540");
 413         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
 414             IXGBE_SUCCESS) {
 415                 status = ixgbe_read_eerd_buffer_generic(hw, offset,
 416                                                         words, data);
 417                 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 418         } else {
 419                 status = IXGBE_ERR_SWFW_SYNC;
 420         }
 421
 422         return status;
 423 }
 424
 425 /**
 426  *  ixgbe_write_eewr_X540 - Write EEPROM word using EEWR
 427  *  @hw: pointer to hardware structure
 428  *  @offset: offset of  word in the EEPROM to write
 429  *  @data: word write to the EEPROM
 430  *
 431  *  Write a 16 bit word to the EEPROM using the EEWR register.
 432  **/
 433 s32 ixgbe_write_eewr_X540(struct ixgbe_hw *hw, u16 offset, u16 data)
 434 {
 435         s32 status = IXGBE_SUCCESS;
 436
 437         DEBUGFUNC("ixgbe_write_eewr_X540");
 438         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
 439             IXGBE_SUCCESS) {
 440                 status = ixgbe_write_eewr_generic(hw, offset, data);
 441                 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 442         } else {
 443                 status = IXGBE_ERR_SWFW_SYNC;
 444         }
 445
 446         return status;
 447 }
 448
 449 /**
 450  *  ixgbe_write_eewr_buffer_X540 - Write EEPROM word(s) using EEWR
 451  *  @hw: pointer to hardware structure
 452  *  @offset: offset of  word in the EEPROM to write
 453  *  @words: number of words
 454  *  @data: word(s) write to the EEPROM
 455  *
 456  *  Write a 16 bit word(s) to the EEPROM using the EEWR register.
 457  **/
 458 s32 ixgbe_write_eewr_buffer_X540(struct ixgbe_hw *hw,
 459                                  u16 offset, u16 words, u16 *data)
 460 {
 461         s32 status = IXGBE_SUCCESS;
 462
 463         DEBUGFUNC("ixgbe_write_eewr_buffer_X540");
 464         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
 465             IXGBE_SUCCESS) {
 466                 status = ixgbe_write_eewr_buffer_generic(hw, offset,
 467                                                          words, data);
 468                 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 469         } else {
 470                 status = IXGBE_ERR_SWFW_SYNC;
 471         }
 472
 473         return status;
 474 }
 475
 476 /**
 477  *  ixgbe_calc_eeprom_checksum_X540 - Calculates and returns the checksum
 478  *
 479  *  This function does not use synchronization for EERD and EEWR. It can
 480  *  be used internally by function which utilize ixgbe_acquire_swfw_sync_X540.
 481  *
 482  *  @hw: pointer to hardware structure
 483  *
 484  *  Returns a negative error code on error, or the 16-bit checksum
 485  **/
 486 s32 ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw)
 487 {
 488         u16 i, j;
 489         u16 checksum = 0;
 490         u16 length = 0;
 491         u16 pointer = 0;
 492         u16 word = 0;
 493         u16 checksum_last_word = IXGBE_EEPROM_CHECKSUM;
 494         u16 ptr_start = IXGBE_PCIE_ANALOG_PTR;
 495
 496         /* Do not use hw->eeprom.ops.read because we do not want to take
 497          * the synchronization semaphores here. Instead use
 498          * ixgbe_read_eerd_generic
 499          */
 500
 501         DEBUGFUNC("ixgbe_calc_eeprom_checksum_X540");
 502
 503         /* Include 0x0-0x3F in the checksum */
 504         for (i = 0; i <= checksum_last_word; i++) {
 505                 if (ixgbe_read_eerd_generic(hw, i, &word)) {
 506                         DEBUGOUT("EEPROM read failed\n");
 507                         return IXGBE_ERR_EEPROM;
 508                 }
 509                 if (i != IXGBE_EEPROM_CHECKSUM)
 510                         checksum += word;
 511         }
 512
 513         /* Include all data from pointers 0x3, 0x6-0xE.  This excludes the
 514          * FW, PHY module, and PCIe Expansion/Option ROM pointers.
 515          */
 516         for (i = ptr_start; i < IXGBE_FW_PTR; i++) {
 517                 if (i == IXGBE_PHY_PTR || i == IXGBE_OPTION_ROM_PTR)
 518                         continue;
 519
 520                 if (ixgbe_read_eerd_generic(hw, i, &pointer)) {
 521                         DEBUGOUT("EEPROM read failed\n");
 522                         return IXGBE_ERR_EEPROM;
 523                 }
 524
 525                 /* Skip pointer section if the pointer is invalid. */
 526                 if (pointer == 0xFFFF || pointer == 0 ||
 527                     pointer >= hw->eeprom.word_size)
 528                         continue;
 529
 530                 if (ixgbe_read_eerd_generic(hw, pointer, &length)) {
 531                         DEBUGOUT("EEPROM read failed\n");
 532                         return IXGBE_ERR_EEPROM;
 533                 }
 534
 535                 /* Skip pointer section if length is invalid. */
 536                 if (length == 0xFFFF || length == 0 ||
 537                     (pointer + length) >= hw->eeprom.word_size)
 538                         continue;
 539
 540                 for (j = pointer + 1; j <= pointer + length; j++) {
 541                         if (ixgbe_read_eerd_generic(hw, j, &word)) {
 542                                 DEBUGOUT("EEPROM read failed\n");
 543                                 return IXGBE_ERR_EEPROM;
 544                         }
 545                         checksum += word;
 546                 }
 547         }
 548
 549         checksum = (u16)IXGBE_EEPROM_SUM - checksum;
 550
 551         return (s32)checksum;
 552 }
 553
 554 /**
 555  *  ixgbe_validate_eeprom_checksum_X540 - Validate EEPROM checksum
 556  *  @hw: pointer to hardware structure
 557  *  @checksum_val: calculated checksum
 558  *
 559  *  Performs checksum calculation and validates the EEPROM checksum.  If the
 560  *  caller does not need checksum_val, the value can be NULL.
 561  **/
 562 s32 ixgbe_validate_eeprom_checksum_X540(struct ixgbe_hw *hw,
 563                                         u16 *checksum_val)
 564 {
 565         s32 status;
 566         u16 checksum;
 567         u16 read_checksum = 0;
 568
 569         DEBUGFUNC("ixgbe_validate_eeprom_checksum_X540");
 570
 571         /* Read the first word from the EEPROM. If this times out or fails, do
 572          * not continue or we could be in for a very long wait while every
 573          * EEPROM read fails
 574          */
 575         status = hw->eeprom.ops.read(hw, 0, &checksum);
 576         if (status) {
 577                 DEBUGOUT("EEPROM read failed\n");
 578                 return status;
 579         }
 580
 581         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM))
 582                 return IXGBE_ERR_SWFW_SYNC;
 583
 584         status = hw->eeprom.ops.calc_checksum(hw);
 585         if (status < 0)
 586                 goto out;
 587
 588         checksum = (u16)(status & 0xffff);
 589
 590         /* Do not use hw->eeprom.ops.read because we do not want to take
 591          * the synchronization semaphores twice here.
 592          */
 593         status = ixgbe_read_eerd_generic(hw, IXGBE_EEPROM_CHECKSUM,
 594                                          &read_checksum);
 595         if (status)
 596                 goto out;
 597
 598         /* Verify read checksum from EEPROM is the same as
 599          * calculated checksum
 600          */
 601         if (read_checksum != checksum) {
 602                 ERROR_REPORT1(IXGBE_ERROR_INVALID_STATE,
 603                              "Invalid EEPROM checksum");
 604                 status = IXGBE_ERR_EEPROM_CHECKSUM;
 605         }
 606
 607         /* If the user cares, return the calculated checksum */
 608         if (checksum_val)
 609                 *checksum_val = checksum;
 610
 611 out:
 612         hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 613
 614         return status;
 615 }
 616
 617 /**
 618  * ixgbe_update_eeprom_checksum_X540 - Updates the EEPROM checksum and flash
 619  * @hw: pointer to hardware structure
 620  *
 621  * After writing EEPROM to shadow RAM using EEWR register, software calculates
 622  * checksum and updates the EEPROM and instructs the hardware to update
 623  * the flash.
 624  **/
 625 s32 ixgbe_update_eeprom_checksum_X540(struct ixgbe_hw *hw)
 626 {
 627         s32 status;
 628         u16 checksum;
 629
 630         DEBUGFUNC("ixgbe_update_eeprom_checksum_X540");
 631
 632         /* Read the first word from the EEPROM. If this times out or fails, do
 633          * not continue or we could be in for a very long wait while every
 634          * EEPROM read fails
 635          */
 636         status = hw->eeprom.ops.read(hw, 0, &checksum);
 637         if (status) {
 638                 DEBUGOUT("EEPROM read failed\n");
 639                 return status;
 640         }
 641
 642         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM))
 643                 return IXGBE_ERR_SWFW_SYNC;
 644
 645         status = hw->eeprom.ops.calc_checksum(hw);
 646         if (status < 0)
 647                 goto out;
 648
 649         checksum = (u16)(status & 0xffff);
 650
 651         /* Do not use hw->eeprom.ops.write because we do not want to
 652          * take the synchronization semaphores twice here.
 653          */
 654         status = ixgbe_write_eewr_generic(hw, IXGBE_EEPROM_CHECKSUM, checksum);
 655         if (status)
 656                 goto out;
 657
 658         status = ixgbe_update_flash_X540(hw);
 659
 660 out:
 661         hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 662
 663         return status;
 664 }
 665
 666 /**
 667  *  ixgbe_update_flash_X540 - Instruct HW to copy EEPROM to Flash device
 668  *  @hw: pointer to hardware structure
 669  *
 670  *  Set FLUP (bit 23) of the EEC register to instruct Hardware to copy
 671  *  EEPROM from shadow RAM to the flash device.
 672  **/
 673 s32 ixgbe_update_flash_X540(struct ixgbe_hw *hw)
 674 {
 675         u32 flup;
 676         s32 status;
 677
 678         DEBUGFUNC("ixgbe_update_flash_X540");
 679
 680         status = ixgbe_poll_flash_update_done_X540(hw);
 681         if (status == IXGBE_ERR_EEPROM) {
 682                 DEBUGOUT("Flash update time out\n");
 683                 goto out;
 684         }
 685
 686         flup = IXGBE_READ_REG(hw, IXGBE_EEC_BY_MAC(hw)) | IXGBE_EEC_FLUP;
 687         IXGBE_WRITE_REG(hw, IXGBE_EEC_BY_MAC(hw), flup);
 688
 689         status = ixgbe_poll_flash_update_done_X540(hw);
 690         if (status == IXGBE_SUCCESS)
 691                 DEBUGOUT("Flash update complete\n");
 692         else
 693                 DEBUGOUT("Flash update time out\n");
 694
 695         if (hw->mac.type == ixgbe_mac_X540 && hw->revision_id == 0) {
 696                 flup = IXGBE_READ_REG(hw, IXGBE_EEC_BY_MAC(hw));
 697
 698                 if (flup & IXGBE_EEC_SEC1VAL) {
 699                         flup |= IXGBE_EEC_FLUP;
 700                         IXGBE_WRITE_REG(hw, IXGBE_EEC_BY_MAC(hw), flup);
 701                 }
 702
 703                 status = ixgbe_poll_flash_update_done_X540(hw);
 704                 if (status == IXGBE_SUCCESS)
 705                         DEBUGOUT("Flash update complete\n");
 706                 else
 707                         DEBUGOUT("Flash update time out\n");
 708         }
 709 out:
 710         return status;
 711 }
 712
 713 /**
 714  *  ixgbe_poll_flash_update_done_X540 - Poll flash update status
 715  *  @hw: pointer to hardware structure
 716  *
 717  *  Polls the FLUDONE (bit 26) of the EEC Register to determine when the
 718  *  flash update is done.
 719  **/
 720 STATIC s32 ixgbe_poll_flash_update_done_X540(struct ixgbe_hw *hw)
 721 {
 722         u32 i;
 723         u32 reg;
 724         s32 status = IXGBE_ERR_EEPROM;
 725
 726         DEBUGFUNC("ixgbe_poll_flash_update_done_X540");
 727
 728         for (i = 0; i < IXGBE_FLUDONE_ATTEMPTS; i++) {
 729                 reg = IXGBE_READ_REG(hw, IXGBE_EEC_BY_MAC(hw));
 730                 if (reg & IXGBE_EEC_FLUDONE) {
 731                         status = IXGBE_SUCCESS;
 732                         break;
 733                 }
 734                 msec_delay(5);
 735         }
 736
 737         if (i == IXGBE_FLUDONE_ATTEMPTS)
 738                 ERROR_REPORT1(IXGBE_ERROR_POLLING,
 739                              "Flash update status polling timed out");
 740
 741         return status;
 742 }
 743
 744 /**
 745  *  ixgbe_acquire_swfw_sync_X540 - Acquire SWFW semaphore
 746  *  @hw: pointer to hardware structure
 747  *  @mask: Mask to specify which semaphore to acquire
 748  *
 749  *  Acquires the SWFW semaphore thought the SW_FW_SYNC register for
 750  *  the specified function (CSR, PHY0, PHY1, NVM, Flash)
 751  **/
 752 s32 ixgbe_acquire_swfw_sync_X540(struct ixgbe_hw *hw, u32 mask)
 753 {
 754         u32 swmask = mask & IXGBE_GSSR_NVM_PHY_MASK;
 755         u32 fwmask = swmask << 5;
 756         u32 swi2c_mask = mask & IXGBE_GSSR_I2C_MASK;
 757         u32 timeout = 200;
 758         u32 hwmask = 0;
 759         u32 swfw_sync;
 760         u32 i;
 761
 762         DEBUGFUNC("ixgbe_acquire_swfw_sync_X540");
 763
 764         if (swmask & IXGBE_GSSR_EEP_SM)
 765                 hwmask |= IXGBE_GSSR_FLASH_SM;
 766
 767         /* SW only mask doesn't have FW bit pair */
 768         if (mask & IXGBE_GSSR_SW_MNG_SM)
 769                 swmask |= IXGBE_GSSR_SW_MNG_SM;
 770
 771         swmask |= swi2c_mask;
 772         fwmask |= swi2c_mask << 2;
 773         for (i = 0; i < timeout; i++) {
 774                 /* SW NVM semaphore bit is used for access to all
 775                  * SW_FW_SYNC bits (not just NVM)
 776                  */
 777                 if (ixgbe_get_swfw_sync_semaphore(hw))
 778                         return IXGBE_ERR_SWFW_SYNC;
 779
 780                 swfw_sync = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw));
 781                 if (!(swfw_sync & (fwmask | swmask | hwmask))) {
 782                         swfw_sync |= swmask;
 783                         IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw),
 784                                         swfw_sync);
 785                         ixgbe_release_swfw_sync_semaphore(hw);
 786                         msec_delay(5);
 787                         return IXGBE_SUCCESS;
 788                 }
 789                 /* Firmware currently using resource (fwmask), hardware
 790                  * currently using resource (hwmask), or other software
 791                  * thread currently using resource (swmask)
 792                  */
 793                 ixgbe_release_swfw_sync_semaphore(hw);
 794                 msec_delay(5);
 795         }
 796
 797         /* Failed to get SW only semaphore */
 798         if (swmask == IXGBE_GSSR_SW_MNG_SM) {
 799                 ERROR_REPORT1(IXGBE_ERROR_POLLING,
 800                              "Failed to get SW only semaphore");
 801                 return IXGBE_ERR_SWFW_SYNC;
 802         }
 803
 804         /* If the resource is not released by the FW/HW the SW can assume that
 805          * the FW/HW malfunctions. In that case the SW should set the SW bit(s)
 806          * of the requested resource(s) while ignoring the corresponding FW/HW
 807          * bits in the SW_FW_SYNC register.
 808          */
 809         if (ixgbe_get_swfw_sync_semaphore(hw))
 810                 return IXGBE_ERR_SWFW_SYNC;
 811         swfw_sync = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw));
 812         if (swfw_sync & (fwmask | hwmask)) {
 813                 swfw_sync |= swmask;
 814                 IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw), swfw_sync);
 815                 ixgbe_release_swfw_sync_semaphore(hw);
 816                 msec_delay(5);
 817                 return IXGBE_SUCCESS;
 818         }
 819         /* If the resource is not released by other SW the SW can assume that
 820          * the other SW malfunctions. In that case the SW should clear all SW
 821          * flags that it does not own and then repeat the whole process once
 822          * again.
 823          */
 824         if (swfw_sync & swmask) {
 825                 u32 rmask = IXGBE_GSSR_EEP_SM | IXGBE_GSSR_PHY0_SM |
 826                             IXGBE_GSSR_PHY1_SM | IXGBE_GSSR_MAC_CSR_SM;
 827
 828                 if (swi2c_mask)
 829                         rmask |= IXGBE_GSSR_I2C_MASK;
 830                 ixgbe_release_swfw_sync_X540(hw, rmask);
 831                 ixgbe_release_swfw_sync_semaphore(hw);
 832                 return IXGBE_ERR_SWFW_SYNC;
 833         }
 834         ixgbe_release_swfw_sync_semaphore(hw);
 835
 836         return IXGBE_ERR_SWFW_SYNC;
 837 }
 838
 839 /**
 840  *  ixgbe_release_swfw_sync_X540 - Release SWFW semaphore
 841  *  @hw: pointer to hardware structure
 842  *  @mask: Mask to specify which semaphore to release
 843  *
 844  *  Releases the SWFW semaphore through the SW_FW_SYNC register
 845  *  for the specified function (CSR, PHY0, PHY1, EVM, Flash)
 846  **/
 847 void ixgbe_release_swfw_sync_X540(struct ixgbe_hw *hw, u32 mask)
 848 {
 849         u32 swmask = mask & (IXGBE_GSSR_NVM_PHY_MASK | IXGBE_GSSR_SW_MNG_SM);
 850         u32 swfw_sync;
 851
 852         DEBUGFUNC("ixgbe_release_swfw_sync_X540");
 853
 854         if (mask & IXGBE_GSSR_I2C_MASK)
 855                 swmask |= mask & IXGBE_GSSR_I2C_MASK;
 856         ixgbe_get_swfw_sync_semaphore(hw);
 857
 858         swfw_sync = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw));
 859         swfw_sync &= ~swmask;
 860         IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw), swfw_sync);
 861
 862         ixgbe_release_swfw_sync_semaphore(hw);
 863         msec_delay(5);
 864 }
 865
 866 /**
 867  *  ixgbe_get_swfw_sync_semaphore - Get hardware semaphore
 868  *  @hw: pointer to hardware structure
 869  *
 870  *  Sets the hardware semaphores so SW/FW can gain control of shared resources
 871  **/
 872 STATIC s32 ixgbe_get_swfw_sync_semaphore(struct ixgbe_hw *hw)
 873 {
 874         s32 status = IXGBE_ERR_EEPROM;
 875         u32 timeout = 2000;
 876         u32 i;
 877         u32 swsm;
 878
 879         DEBUGFUNC("ixgbe_get_swfw_sync_semaphore");
 880
 881         /* Get SMBI software semaphore between device drivers first */
 882         for (i = 0; i < timeout; i++) {
 883                 /*
 884                  * If the SMBI bit is 0 when we read it, then the bit will be
 885                  * set and we have the semaphore
 886                  */
 887                 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM_BY_MAC(hw));
 888                 if (!(swsm & IXGBE_SWSM_SMBI)) {
 889                         status = IXGBE_SUCCESS;
 890                         break;
 891                 }
 892                 usec_delay(50);
 893         }
 894
 895         /* Now get the semaphore between SW/FW through the REGSMP bit */
 896         if (status == IXGBE_SUCCESS) {
 897                 for (i = 0; i < timeout; i++) {
 898                         swsm = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw));
 899                         if (!(swsm & IXGBE_SWFW_REGSMP))
 900                                 break;
 901
 902                         usec_delay(50);
 903                 }
 904
 905                 /*
 906                  * Release semaphores and return error if SW NVM semaphore
 907                  * was not granted because we don't have access to the EEPROM
 908                  */
 909                 if (i >= timeout) {
 910                         ERROR_REPORT1(IXGBE_ERROR_POLLING,
 911                                 "REGSMP Software NVM semaphore not granted.\n");
 912                         ixgbe_release_swfw_sync_semaphore(hw);
 913                         status = IXGBE_ERR_EEPROM;
 914                 }
 915         } else {
 916                 ERROR_REPORT1(IXGBE_ERROR_POLLING,
 917                              "Software semaphore SMBI between device drivers "
 918                              "not granted.\n");
 919         }
 920
 921         return status;
 922 }
 923
 924 /**
 925  *  ixgbe_release_swfw_sync_semaphore - Release hardware semaphore
 926  *  @hw: pointer to hardware structure
 927  *
 928  *  This function clears hardware semaphore bits.
 929  **/
 930 STATIC void ixgbe_release_swfw_sync_semaphore(struct ixgbe_hw *hw)
 931 {
 932         u32 swsm;
 933
 934         DEBUGFUNC("ixgbe_release_swfw_sync_semaphore");
 935
 936         /* Release both semaphores by writing 0 to the bits REGSMP and SMBI */
 937
 938         swsm = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw));
 939         swsm &= ~IXGBE_SWFW_REGSMP;
 940         IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw), swsm);
 941
 942         swsm = IXGBE_READ_REG(hw, IXGBE_SWSM_BY_MAC(hw));
 943         swsm &= ~IXGBE_SWSM_SMBI;
 944         IXGBE_WRITE_REG(hw, IXGBE_SWSM_BY_MAC(hw), swsm);
 945
 946         IXGBE_WRITE_FLUSH(hw);
 947 }
 948
 949 /**
 950  *  ixgbe_init_swfw_sync_X540 - Release hardware semaphore
 951  *  @hw: pointer to hardware structure
 952  *
 953  *  This function reset hardware semaphore bits for a semaphore that may
 954  *  have be left locked due to a catastrophic failure.
 955  **/
 956 void ixgbe_init_swfw_sync_X540(struct ixgbe_hw *hw)
 957 {
 958         /* First try to grab the semaphore but we don't need to bother
 959          * looking to see whether we got the lock or  not since we do
 960          * the same thing regardless of whether we got the lock or not.
 961          * We got the lock - we release it.
 962          * We timeout trying to get the lock - we force its release.
 963          */
 964         ixgbe_get_swfw_sync_semaphore(hw);
 965         ixgbe_release_swfw_sync_semaphore(hw);
 966 }
 967
 968 /**
 969  * ixgbe_blink_led_start_X540 - Blink LED based on index.
 970  * @hw: pointer to hardware structure
 971  * @index: led number to blink
 972  *
 973  * Devices that implement the version 2 interface:
 974  *   X540
 975  **/
 976 s32 ixgbe_blink_led_start_X540(struct ixgbe_hw *hw, u32 index)
 977 {
 978         u32 macc_reg;
 979         u32 ledctl_reg;
 980         ixgbe_link_speed speed;
 981         bool link_up;
 982
 983         DEBUGFUNC("ixgbe_blink_led_start_X540");
 984
 985         /*
 986          * Link should be up in order for the blink bit in the LED control
 987          * register to work. Force link and speed in the MAC if link is down.
 988          * This will be reversed when we stop the blinking.
 989          */
 990         hw->mac.ops.check_link(hw, &speed, &link_up, false);
 991         if (link_up == false) {
 992                 macc_reg = IXGBE_READ_REG(hw, IXGBE_MACC);
 993                 macc_reg |= IXGBE_MACC_FLU | IXGBE_MACC_FSV_10G | IXGBE_MACC_FS;
 994                 IXGBE_WRITE_REG(hw, IXGBE_MACC, macc_reg);
 995         }
 996         /* Set the LED to LINK_UP + BLINK. */
 997         ledctl_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
 998         ledctl_reg &= ~IXGBE_LED_MODE_MASK(index);
 999         ledctl_reg |= IXGBE_LED_BLINK(index);
1000         IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, ledctl_reg);
1001         IXGBE_WRITE_FLUSH(hw);
1002
1003         return IXGBE_SUCCESS;
1004 }
1005
1006 /**
1007  * ixgbe_blink_led_stop_X540 - Stop blinking LED based on index.
1008  * @hw: pointer to hardware structure
1009  * @index: led number to stop blinking
1010  *
1011  * Devices that implement the version 2 interface:
1012  *   X540
1013  **/
1014 s32 ixgbe_blink_led_stop_X540(struct ixgbe_hw *hw, u32 index)
1015 {
1016         u32 macc_reg;
1017         u32 ledctl_reg;
1018
1019         DEBUGFUNC("ixgbe_blink_led_stop_X540");
1020
1021         /* Restore the LED to its default value. */
1022         ledctl_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
1023         ledctl_reg &= ~IXGBE_LED_MODE_MASK(index);
1024         ledctl_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
1025         ledctl_reg &= ~IXGBE_LED_BLINK(index);
1026         IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, ledctl_reg);
1027
1028         /* Unforce link and speed in the MAC. */
1029         macc_reg = IXGBE_READ_REG(hw, IXGBE_MACC);
1030         macc_reg &= ~(IXGBE_MACC_FLU | IXGBE_MACC_FSV_10G | IXGBE_MACC_FS);
1031         IXGBE_WRITE_REG(hw, IXGBE_MACC, macc_reg);
1032         IXGBE_WRITE_FLUSH(hw);
1033
1034         return IXGBE_SUCCESS;
1035 }